Thanks! An excellent quiz.
Accuracy also applies to using the whiz wheel.
That is true, but sadly, accuracy is also required from the the whizz wheel printers. My whizz wheel tells me that 2 x 20 = 40.4 and I certainly don't trust the wind calcs to the nearest degree.
For that reason, in exams, I prefer to memorise conversion factors (they are still there on the whizz wheel if you forget) and use a calculator.
You can also do wind calculations on a scientific calculator (actually slower than the whizz wheel, but more accurate). You do have to remember the formulae though.
Backpacker, a variant on your 'choose the third answer' principle is 'choose the third most conservative'. For example in an icing question, 'Light' is seldom the answer if Moderate and Severe are also available, and Moderate comes up more often than Severe. Just my impression from the confusers. Knowing the answers remains the best strategy!